http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
치수/치근단 질환에 이환된 영구치의 치수 조직 재생과 치근 형성
유연지,백승호,손호현 大韓齒科保存學會 2010 Restorative Dentistry & Endodontics Vol.35 No.4
최근 치수 질환 또는 치근단 질환을 가진 미성숙 영구치에 대한 보존적 치료의 방법으로 여러가지 근관 내 소독 약제를 이용하에 증상 개선은 물론 치근의 성장 및 치수의 재생이 이루어진 증례들이 보고되고 있다. 그 기전에 대해서는 아직 명확하게 밝혀지지는 않았지만 여러가지 줄기 세포 또는 미분화 간엽 세포들이 관여하는 것으로 생각되며, 실제로 재생된 조직에서는 대부분백악질양또는골양물질의 침착이 관찰되고 있다. 이 새롭고보존적인 치료접근 방법은 다능성 줄기 세포와 다양한조직 공학 기술에 대한 연구와 더불어, 재생적 근관 치료에 더 밝은 비전을 제시하고 있다. Numerous cases about additional growth of roots or pulp tissue regeneration by using various intracanal medicaments in immature permanent teeth with periapical or pulpal disease have been reported. The underlying mechanism has not been clearly delineated. but it has been widely accepted that undifferentiated mesenchymal cells and stem cells are involved. Moreover, the growth and deposition of osteoid or cementoid tissues have been observed in regenerated pulp and roots. This new and non-invasive treatment has brightened the future of endodontics. and enlarged the vision of regenerative root canal treatment with multi-potent stem cells and various tissue engineering techniques.
유현승,김갑용,김두만 한국 항공대학교 항공산업기술연구소 1999 航空宇宙産業技術硏究所 硏究誌 Vol.9 No.-
본 연구는 구조물의 측정에 이용되는 Extensometer를 국산화하는 것을 목적으로하였다. 외국의 시방서를 참고로 스트레인게이지를 이용하여 시제품을 제작하였다. 수감체는 알루미늄 합금을 사용하여 최대용량을 4 Kgf로 하였다. 시제품을 제작하고 정적인 Calibration 을 한 후 성능 평가를 하였다. 성능 평가는 알루미늄 시편에 시제품을 고정시키고 MTS로 반복하중을 가하는 방법으로 하였다. 시제품의 성능은 단일축 게이지보다 4배의 출력을 보였다. 또 최대하중의 5%의 하중을 8시간(약10000회)동안 반복적으로 가하였다. 이때 실험전과 실험후의 출력이 일정한 값을 보였다. 앞으로 실제 구조물을 측정할 수 있는 용량의 Extensometer를 제작하기 위하여 Extensometer의 재료와 열처리 기술에 대한 연구가 필요하겠다. 또 실제구조물을 측정하고 그 실용성을 평가해 보겠다. In this paper, the technique to make our own's extensometer is studied. The extensometer is to measure a structure. The prototype is manufactured by using a strain-gauge with the help of a foreign manual. The capacity of sensing part in aluminum alloy is 4 Kgf. The prototype is estimated after static calibration is done. The MTS is used to estimate the protype. The ability of a prototype is 4 times than it of an uniaxial strain-gauge. The 5 percent of maximum force is loaded repeatedly for 8 hours. The result shows that experiment is equal to theory. Later, the material of an extensometer and the technique of heat treatment must be studied to measure a real structure.
임상증례중심 성인 전문적 심장구조술 교육과정에 대한 고찰
유은영,박승현,박규남,최세민,김세경 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2
Background: To describe the first experience of case-based advanced cardiac life support(ACLS) course in Korea. Methods: We have given case-based ACLS course to 13 nurses(6 emergency nurses, 4 coronary care unit nurses, 3 professors) and 17 physicians(4 emergency physicians, 12 emergency residents, 1 intern). We performed the case-based ACLS course according to 1992 American Heart Association guidelines and recommendations for advanced cardiac life support by american ACLS instructors(1 pulmonologist, 4 critical care nurses). We performed final theoretical written test and 2 times written survey (immediate and 100th day after the course) about the course. Results: On final written test, all practitioners answered at least 70% of the questions correctly. There was no significant difference between nurses and physicians(86.2±3.6 of physicians and 82.5±6.8 of nurses, p=0.06). 90% of participants considered that case-based advanced cardiac life support was acceptable. 100th day after the course, 93% of participants answered that ACLS course have been helpful on his/her job and also want retraining of ACLS course. 70% of participants considered that ideal ACLS training committee in Korea is the Korean Society of Emergency Medicine. Conclusion: Case-based ACLS course is a useful educational method for physicians and nurses in Korea. In the future, we should organize Korean resuscitation committee and then make guidelines for ACLS, and then continuously educate physicians and nurses.
유승희,최현희 경희대학교 체육과학연구소 1997 體育學論文集 Vol.25 No.-
The purpose of this, study was to investigate and compare pulmonary ventilation, cardiorespiratory fuction of deaf person and normal person. For this purpose, 26 subjects(13 deaf person, 13 normal person) were selected. The results were as followings. 1.Pulmonary ventilation 1)The slow vitae capacity showed great significant difference(p<.05) and the predominant order of the mean value of slow vital capacity was deaf person(4.13±0.70 l). normal person(4.71 ±0.38 l). 2)The forced vital capacity showed great significant difference(p<.001) and the predominant order of the mean value of forced vital capacity was deaf person(3.84±0.67 l), normal person(4.54±0.47 1). 3)The forced expiratory volume in 1 second showed great significant difference(P<.001) and the predominant order of the mean value of forced expiratory volume in 1 second was deaf person(3.56±0.34 l). normal person(4.10±0.41 l). 4)The forced expiratory flow 200-1200ml showed great significant difference(P<.001) and the predominant order of the mean value of forced expiratory flow 200-1200ml was deaf person(7.35 ± 1.321), normal person(9.20± 1.25 l). 5)The maximal voluntary ventilation showed great significant difference(p<.05) and talc predominant order of the mean value of maximal voluntary ventilation was deaf person(119.85 ±24.98 l), normal person(152.43 ±30.39 l). 6)The precent forced expiratory volume in 1 second, forced expiratory flow 25-75%. peak expiratory flow, slow vital capacity showed no significance. 2.Cardiorespiratory function 1)The ventilation in time of maximum exercise showed great significant difference(P<.05) and the predominant order of the mean value of the ventilation in time of maximum exercise was the deaf person(103.88±18.45 l/min), normal person(122.51 ±20.18 l/min). 2)The heart rate in time of maximum exercise showed significant difference(P<.05) and the predominant order of the mean value of the heart rate in time of maximum exercise was deaf person(198.38±5.47beats/min), normal person(203.42±6.66beats/min). 3)The ventilation in time of rest, heart rate in time of maximum exercise, oxygen pulse in tilde of maximum exercise and rest, oxygen consumption in time of maximum exercise and rest, carbon dioxide production in title of maximum exercise and rest, oxygen consumption per kg body weight in time of maximum exercise and rest, tidal volume in time of maximum exercise and rest, respiratory rate in time of maximum exercise and rest. showed no significance.
엘리트 알파인 스키 선수와 대학서클 알파인 선수의 등속성 근력 발현 특성에 대한 비교 연구
유승희,안정현,최현희 경희대학교 체육과학연구소 2001 體育學論文集 Vol.29 No.-
The purpose of this study was to compare isokinetic muscle strength between elite players and college players on alpine skiing and to offer foundamental information on characteristics of thigh muscle strength for elite players and effective training method for college club players The subjects of this study were 10 national ski players and 10 college club players. Also, the experimental instruments used were Martin's anthropometer(PKS-100, Japan), weight meter(TBF-202, Japan), and isokinetic equipment(CYBEX NORM, USA). To analyze the data, the statistical method used in this study were mean, standard deviation, and t-test using SPSS for Windows(Version 10.0.7). Based on aforementioned research method, the results of this study are as follows. 1. In peak torque, elite group was higher than college club group. Especially, right extension(p〈.05) and right flexion(p〈.01) were significant high in 240˚/sec. 2. In peak torque % of body weight, elite group was significant high on riggtㆍleft extension and flexion in 60˚/sec & 240˚/sec. 3. In angle of peak torque, elite group was higher than college club group. Especially, left extension(p〈.01) was significant high in 60˚/sec. 4. In average power, elite group was higher than college club group. Especially, right extension(p〈.05) and right flexion(p〈.01) were significant high in 240˚/sec. 5. In total work, elite group was significant high on rightㆍleft extension and flexion. However, on the muscle endurance ratio, there was no significant difference. 6. In peak torque for flexion/extension, there was no significant difference between elite group and college club group.
초음파검사의 수치적 모델링 기법 : 유한차분법 및 유한요소법
임현준,유승현 한국비파괴검사학회 2000 한국비파괴검사학회지 Vol.20 No.2
초음파검사에서 발생하는 물리적 현상의 복잡성을 고려할 때, 이를 이론적으로 모델링하기 위해 수치적인 기법을 이용하는 것이 효과적인 경우가 많다. 본 논문에서는 초음파검사를 수치적으로 모델링하는 기법들에 대하여 개괄적으로 살펴보고, 특히 유한차분법과 유한요소법에 대하여 상세히 알아본다. 즉, 유한차분법과 유한요소법을 이용한 해석의 개요를 설명하고, 이들의 적용시 고려사항 및 문제점에 대해 알아 본 후, 기존의 연구결과 중 중요한 것들을 참고문헌으로 열거하고 몇 가지 예를 소개한다. 계속되는 컴퓨터의 기술적 발전으로 인하여 초음파검사에 대한 수치적 모델링 기법의 신뢰성과 편의성이 지속적으로 증대될 것으로 기대된다. Due to the great complexity of the physical phenomena involved in most ultrasonic nondestructive testing, the numerical method is effective in many cases of their theoretical modeling. A brief overview is provided in this paper of the numerical methods used in modeling ultrasonic nondestructive testing, with an emphasis on the finite difference and the finite element methods. The procedures of execution, special considerations required, and some previous research results of the finite difference and the finite element methods are presented, with a rather extensive list of work reported in the literature. These numerical modeling techniques for ultrasonic nondestructive testing are expected to be more reliable and more convenient, as a result of the continuing technological development of computers
정삼현,배정하,서승유,김규환,이동갑,하정호 東亞大學校 附設 스포츠科學硏究所 1997 스포츠科學硏究論文集 Vol.15 No.-
Among the school gymnastics facilities, perhaps the most common ones are gymnastics apparatus. That's why a historic study in the event of havy gymnastics is required. The researchers here have examined the origin of gymnastics with apparatus centered on Jahn's "turen" exercise. The results are as follows : 1. Heavy gymnastics originally contained a lot of elements from field and track events. It had aims of obtaining natural physical movement and enhancing work efficiency. 2. An outdoor event turnen was banned and changed into an inddor event. The fact that apparatus gymnastics is nowadays held indoors reveals the decisive influnece of Jahn's turnen exercise. 3. Jahn's balance beam exercise was at first played for the purpose of blancing oneself and merely for fun. It has developed into the present from through wide distribution and elaboration. 4. Jahn first used the term of parallel bars and the present women's event of parallel bars resembles Jahn's. 5. Jahn's horizontal bars have also had a great effect on today's event of horizontal bars.